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arXiv · 1611.02857

Witnessing quantum capacities of correlated channels

Chiara Macchiavello·Massimiliano F. Sacchi
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Abstract

We test a general method to detect lower bounds of the quantum channel capacity for two-qubit correlated channels. We consider in particular correlated dephasing, depolarising and amplitude damping channels. We show that the method is easily implementable, it does not require a priori knowledge about the channels, and it is very efficient, since it does not rely on full quantum process tomography.

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Chiara Macchiavello, Massimiliano F. Sacchi. 2016-11-09. Witnessing quantum capacities of correlated channels. https://doi.org/10.1103/physreva.94.052333

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